High Cell Density Culture of Lactobacillus plantarum Lp-2
- VernacularTitle:植物乳杆菌Lp-2的高密度发酵
- Author:
Guangmin ZHANG
;
Wei WANG
;
Huifang BAO
;
Xiaoling ZHANG
;
Faqiang ZHAN
;
Ruifeng LIN
- Publication Type:Journal Article
- Keywords:
High cell density culture Lactobacillus plantarum Fed-batch fermentation
- From:
China Biotechnology
2006;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
High cell density culture of Lactobacillus plantaru is a significant step of the preparation of lactic acid bacteria starter.Firstly,this experiment is designed to analyze the effects of different dissolved oxygen and pH on the batch fermentation of Lactobacillus plantarum.And then,on the base of the batch fermentation,fed-batch fermentation was studied,companied by chemic neutralization in the experiment to achieve the aim of high cell density cultivation.Finally,in the comparison of two kinds of feeding mode for fed-batch operation in 10L fermentor,it was demonstrated that two kinds of feeding mode made cell concentration increase differently,in which pH feedback feeding can control sucrose concentration within a certain lower range,therefore obtaining the maximum cell concentration.With the pH feedback feeding,the dry cell weight was up to 13.56g/L,which increased 90.05% over that of batch culture.
